XML建模

目录

一、什么叫XML建模

二、XML建模思路图

三、案例

---

一、什么叫XML建模

将XML配置文件中的元素、属性、文本信息转换成对象的过程叫做XML建模

二、XML建模思路图

 

三、案例

config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE config[
	<!ELEMENT config (action*)>
	<!ELEMENT action (forward*)>
	<!ELEMENT forward EMPTY>
	<!ATTLIST action 
		path CDATA #REQUIRED
		type CDATA #REQUIRED
	>
	<!ATTLIST forward
		name CDATA #REQUIRED
		path CDATA #REQUIRED
		redirect (true|false) "false"
	>
]>
	<!--
		config标签:可以包含0~N个action标签
	-->
<config>
	<!--
		action标签:可以饱含0~N个forward标签
		path:以/开头的字符串,并且值必须唯一 非空
		type:字符串,非空
	-->
	<action path="/regAction" type="test.RegAction">
		<!--
			forward标签:没有子标签; 
			name:字符串,同一action标签下的forward标签name值不能相同 ;
			path:以/开头的字符串
			redirect:只能是false|true,允许空,默认值为false
		-->
		<forward name="failed" path="/reg.jsp" redirect="false" />
		<forward name="success" path="/login.jsp" redirect="true" />
	</action>

	<action path="/loginAction" type="test.LoginAction">
		<forward name="failed" path="/login.jsp" redirect="false" />
		<forward name="success" path="/main.jsp" redirect="true" />
	</action>
</config>

ForwardModul

package com.zking.xml.entity;

import java.io.Serializable;

public class ForwardModul implements Serializable {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private String name;
	private String path;
	private Boolean redirect;
	public ForwardModul() {
		
	}
	public String getNmae() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	
	public String getPath() {
		return path;
	}
	public void setPath(String path) {
		this.path = path;
	}
	public Boolean getRedirect() {
		return redirect;
	}
	public void setRedirect(Boolean redirect) {
		this.redirect = redirect;
	}
	@Override
	public String toString() {
		return "ForwardModul [name=" + name + ", type=" + path + ", redirect=" + redirect + "]";
	}
	
}

ActionModul

package com.zking.xml.entity;

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;

public class ActionModul implements Serializable {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private String path;
	private String type;
	private Map<String,ForwardModul> ActionMpdul = new 
	HashMap<String, ForwardModul>();
	/**
	 * 增加ForwardModul对象
	 * @param forwardModul
	 */
	public void push(ForwardModul forwardModul) {
		this.ActionMpdul.put(forwardModul.getNmae(),forwardModul);
	}
	
	/**
	 * 查找对应的对象
	 * @param name 根据键拿到值
	 * @return
	 */
	public ForwardModul getForword(String name) {
		return this.ActionMpdul.get(name);
	}
	public String getPath() {
		return path;
	}
	public void setPath(String path) {
		this.path = path;
	}
	public String getType() {
		return type;
	}
	public void setType(String type) {
		this.type = type;
	}
	public Map<String, ForwardModul> getActionMpdul() {
		return ActionMpdul;
	}
	public void setActionMpdul(Map<String, ForwardModul> actionMpdul) {
		ActionMpdul = actionMpdul;
	}
	public ActionModul() {
		// TODO Auto-generated constructor stub
	}
}

ConfigModul

package com.zking.xml.entity;

import java.io.Serializable;
import java.util.HashMap;
/**
 * 建模实体类 config
 * @author zjjt
 *
 */
import java.util.Map;
public class ConfigModul implements Serializable{

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	
	private Map<String,ActionModul> ConfigModul = 
			new HashMap<String, ActionModul>();

	public Map<String, ActionModul> getConfigModul() {
		return ConfigModul;
	}

	public void setConfigModul(Map<String, ActionModul> configModul) {
		ConfigModul = configModul;
	}
	public ConfigModul() {
		// TODO Auto-generated constructor stub
	}
	
	/**
	 * 将actionModul对象存到Config集合中
	 * @param Actionmodul
	 */
	public void push(ActionModul Actionmodul) {
		this.ConfigModul.put(Actionmodul.getPath(),Actionmodul);
	}
	
	/**
	 * 查找 根据键拿到值
	 * @param path
	 * @return
	 */
	public ActionModul getActionMOdul(String path) {
		return this.ConfigModul.get(path);
	}
}

工具类

package com.zking.xml.util;

import java.io.InputStream;
import java.util.List;

import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.Node;
import org.dom4j.io.SAXReader;

import com.zking.xml.entity.ActionModul;
import com.zking.xml.entity.ConfigModul;
import com.zking.xml.entity.ForwardModul;

public class JianMo {
	private static final String PATH = "/config.xml";
	private JianMo() {
		
	}
	public static ConfigModul getModel(String path) {
		//获取io流
		InputStream is = JianMo.class.getResourceAsStream(path);
		//实例化解析xml工具类 SAXReader
		SAXReader srd = new SAXReader();
		//实例化
		String ActionPath = null;
		String Actiontype = null;
		ActionModul Actionmodul = null;
		
		String ForwardName = null;
		String ForwardPath = null;
		String Forwardredirect = null;
		ForwardModul forwardmodel = null;
		ConfigModul configModul = new ConfigModul();
		try {
			//读取xml文件 得到document对象
			Document document = srd.read(is);
			//找到config节点下的anction
			List<Node> ActionNodes = document.selectNodes("/config/action");
			//System.out.println(ActionNodes.size());
			for (Node node : ActionNodes) {
				//将文本对象转为元素对象
				Element el = (Element)node;
				//拿属性值根据属性名拿对的属性值
				ActionPath = el.attributeValue("path");
				Actiontype = el.attributeValue("type");
				Actionmodul = new ActionModul();
				Actionmodul.setPath(ActionPath);
				Actionmodul.setType(Actiontype);
				//获取action节点下的forword节点
				List<Node> forwardNodes = node.selectNodes("forward");
				for (Node node2 : forwardNodes) {
					//将文本对象转为元素对象
					Element forwardnel = (Element)node2;
					//拿属性值根据属性名拿对的属性值
					ForwardName = forwardnel.attributeValue("name");
					ForwardPath = forwardnel.attributeValue("path");
					forwardmodel = new ForwardModul();
					Forwardredirect = forwardnel.attributeValue("redirect");
					forwardmodel.setName(ForwardName);
					forwardmodel.setPath(ForwardPath);
					forwardmodel.setRedirect(Boolean.parseBoolean(Forwardredirect));
					Actionmodul.push(forwardmodel);
				}
				configModul.push(Actionmodul);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return configModul;
	}
	
	public static ConfigModul getModel() {
		return getModel(PATH);
	}
	public static void main(String[] args) {
		ConfigModul model2 = getModel();
        //根据键拿到ActionModul对象 这个值也就是xml里面所对应的path值
		ActionModul actionMOdul = model2.getActionMOdul("/regAction");
  //根据键拿到ForwordModul对象 这个值也就是xml里面所对应的name值
		ForwardModul forword = actionMOdul.getForword("failed");
		System.out.println(actionMOdul.getType());
		System.out.println(forword.getNmae()+""+forword.getPath());
	}
}	

运行效果图: